Hydrodynamical Models of Elliptical Galaxies

  • E. Moreno
  • P. Pişmiş
Conference paper


Hydrodynamical models of elliptical galaxies can be obtained by means of Jeans’equations (see for example Ortega and de Freitas Pacheco, 1986). Following this approach, we consider a mass distribution in steady state which approximates de Vaucouleurs’ r1/4 law, and assume the principal axes of the velocity distribution to be parallel to unitary vectors in cylindrical and spherical coordinates, with the ratio between dispersions in different directions a constant or a function of position.


Velocity Distribution Mass Distribution Hydrodynamical Model Velocity Dispersion Celestial Mechanics 
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  1. Fehlberg, E. (1968) “Classical fifth-, sixth-, seventh-, and eighth-order Runge-Kutta formulas with stepsize control”, NASA TR R-287.Google Scholar
  2. Fehlberg, E. (1969) “Low-order classical Runge-Kutta formulae with stepsize control and their application to some heat transfer problems”, NASA TR R-315.Google Scholar
  3. Ortega, V. G. and de Freitas Pacheco, J. A. (1986) “Hydrodynamical models of elliptical galaxies”, Rev. Mexicana Astron. Astrof., 12, 97–100.ADSGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • E. Moreno
    • 1
  • P. Pişmiş
    • 1
  1. 1.Instituto de AstronomíaUNAMMéxico, D. F.Mexico

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